Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.A.Orsat apparatusB.flame safety lampC.Halide torchD.combustible gas indicator

题目

Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.

A.Orsat apparatus

B.flame safety lamp

C.Halide torch

D.combustible gas indicator

相似考题

1.()that happen,what()we do?A、If…shallB、Suppose…shallC、Should…wouldD、Had…should

2.How long() you() a member of the club?A.have,,joinedB.have,,beenC.has,,joinedD.has,,been

3.oxygen

4._____the hall, he found all the people_______ there.A.Entered; seatB.Entering; seatedC.To enter; sittingD.Entering; seating

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    Last Sunday, Jane had the windows _________.

    A. cleaning

    B. to clean

    C. cleaned


    参考答案：C

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    In the case of new crude oil tankers，the additional ballast permitted shall be carried in cargo tanks only if such tanks have been ______ before departure from an oil unloading port or terminal.

    A.inerted

    B.crude oil washed

    C.diluted

    D.cleaned


    正确答案：B

  • 第3题：

    Category 2 fuel _____________________


    getFilterName()

  • 第4题：

    Why()the old block of flats()demolished next month?

    A、are…being

    B、is…being

    C、has…been

    D、have…been


    参考答案：B

  • 第5题：

    ______ it rain tomorrow moring, the loading ______.

    A.Should / will be postponed

    B.If / shall be postponed

    C.Should / would be postponed

    D.If / has to be postponed


    正确答案：C
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  • 第6题：

    调用（）方法可以选中单选按钮。

    A．attr("checked","checked")

    B．attr("checked",false)

    C．attr("checked")

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    正确

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